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2 years ago

Plugin y=-5 into either equation and solve for x -6x-8y=-20 or x+y=5

Mathematics

2 answers:

Ludmilka [50]2 years ago

7 0

Answer:

x = 10

Step-by-step explanation:

If you substitute into the second one which is the relatively easier one. You would get:

x + (-5 ) =5

x =5 +5

x= 10

nalin [4]2 years ago

3 0

Answer:

x = 10

Step-by-step explanation:

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Prove algebraically what type of function this is (even, odd, or neither).<br> f(x) = x4 – x2

murzikaleks [220]

Answer:

that's an even function

Step-by-step explanation:

because the greatest degree is 4 and that is even number.

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3 years ago

Ann, Mara, Jenny , Tina, and Sue are sisters. Two of the five sisters must help their fatherat his business each Saturday.How ma

JulijaS [17]

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3 years ago

A bouquet of 8

iren2701 [21]

A rose costs $2.5 and a carnation costs $3.

Step-by-step explanation:

Let,

Roses = x

Carnations = y

According to given statement;

8x+10y=50 Eqn 1

6x+12y=51 Eqn 2

Multiplying Eqn 1 by 6;

$6(8x+10y=50)\\48x+60y=300\ \ \ Eqn\ 3\\$

Multiplying Eqn 2 by 8;

$8(6x+12y=51)\\48x+96y=408\ \ \ Eqn 4$

Subtracting Eqn 3 from Eqn 4;

$(48x+96y)-(48x+60y)=408-300\\48x+96y-48x-60y=108\\36y=108$

Dividing both sides by 36;

$\frac{36y}{36}=\frac{108}{36}\\y=3$

Putting y=3 in Eqn 3;

$48x+60(3)=300\\48x+180=300\\48x=300-180\\48x=120$

Dividing both sides by 48;

$\frac{48x}{48}=\frac{120}{48}\\x=2.5$

A rose costs $2.5 and a carnation costs $3.

Keywords: linear equations, subtraction

Learn more about linear equations at:

#LearnwithBrainly

8 0

3 years ago

For what value of x does 3^4x=27^x-3? a. –9 b. –3 c. 3 d. 9

Irina18 [472]

$\bf 3^{4x}=27^{x-3}\implies 3^{4x}=(3^3)^{x-3}\stackrel{~\hfill \textit{same base, the exponents must also be the same}}{\implies 3^{4x}=3^{3(x-3)}\implies 3^{4x}=3^{3x-9}\qquad } \\\\\\ 4x=3x-9\implies x=-9$

5 0

4 years ago

What is the output of this function when the input is 2

nalin [4]

Easy question.

So, the slope is -x and the y-intercept is at -4.

y = -x - 4

Use this equation and you will find:

y = -2 - 4

y = -6

Answer: (2, -6)

5 0

3 years ago